A fun, flexible action cam, the iOn Air Pro 3 keeps things simple without sacrificing video or build quality, making it an excellent option for those who just want to go out and shoot -- in or out of the water.

The Replay XD Prime X might not have the name recognition of others in the category, but thanks to its lightweight, ultracompact and waterproof body; solid 1080p video quality and pro-centric features, it deserves a spot on your short list.

While not technically color-blind, dogs have a very different way of seeing the world than humans. This TED video shows how dogs actually "see" the world not only with their eyes, but also their noses.